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L-Glutamine 500 mg

Life Extension
4.7
★ ★ ★ ★ ★
(3672 ratings)
Glutamine 500 mg
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Score78
A straightforward 500 mg capsule with reasonable value for small servings, but six capsules are needed to reach 3 g.
How scoring works
Quantity:100 Capsule(s) • (100 servings)
Goals:

Score 78

A straightforward 500 mg capsule with reasonable value for small servings, but six capsules are needed to reach 3 g.
How scoring works
$11.25($0.11 per serving)
iHerb
$ 11.25
Amazon
$ 18.49
Pure Formulas
$ 11.25
Vitacost
$ 11.25
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Analysis

Each capsule supplies 500 mg of L-glutamine, making the labeled serving modest. Reaching 3 g requires six capsules, so concentrated use becomes inconvenient.

The active ingredient and amount are directly disclosed in a simple formula. No premium grade or processing feature is provided to distinguish it from other standard capsules.

Cost efficiency is reasonable for small servings in capsule form. Higher-dose users will likely prefer a 1 g capsule or powder to reduce daily effort.

Who is it for
  • People using a small glutamine amount
  • People who prefer capsules
Best for
  • Low-dose daily use
  • Flexible serving increments

Pros

  • Clearly labeled L-glutamine
  • Simple single-active formula
  • Easy low serving

Cons

  • Only 500 mg per capsule
  • Six capsules needed for 3 g
  • No premium source detail

Nutrient quality

80 High impact

The L-isomer is clear, but no premium grade or processing detail is supplied; the amount per capsule is modest and requires several capsules for targeted use. The disclosed glutamine amount is not unnecessarily aggressive; l-glutamine directly fits a single-ingredient glutamine supplement; the single-active formula contains no filler ingredients.

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Ingredient transparency

76 High impact

Every listed active has a specific amount; no proprietary blend hides key doses. L-glutamine is clearly named, while grade, source, and processing are not described; serving directions and inactive ingredients are not supplied.

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Customer satisfaction

71 High impact

The supplied aggregate average is favorable, though no individual feedback is available; the large rating sample improves confidence in the aggregate average, but no individual feedback is supplied. Detailed feedback is absent, so repeated complaints cannot be assessed; real-world fit with the intended purpose remains uncertain.

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Value for money

84 Highest impact

Basic quality provides fair formula value; the cost is reasonable but the low capsule amount reduces efficiency. The single-active formula contains no filler ingredients; higher-dose formats offer better convenience at similar cost.

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Ingredients

IngredientAmount per serving
L-Glutamine
500 mg
Adults 18–50
Report overview
Glutamine · 500 mg OverallScore62
B- Active Ingredient Quality & BioavailabilityD Dose, Safety & Label TransparencyB- Value

The capsule clearly discloses L-glutamine and is easy to use for a small serving. Reaching a more substantial daily amount would require six capsules, creating a meaningful pill burden. The cost per gram remains reasonable, but the low amount per capsule limits convenience for higher-dose use.

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